a sauce made of melted butter, often diluted with water, sometimes thickened with flour or egg yolk, or both, and seasoned with lemon juice.
Peanut Butter Nightmares: 9 Lesser-Known PhobiasRead more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of butter sauce
An Americanism dating back to 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019